Update app.py

app.py

@@ -1,9 +1,15 @@
+import numpy as np
 import gradio as gr
 
-def image(image, image):
-    img=image
-    img2=image
-    return image,image
+def sepia(input_img):
+    sepia_filter = np.array([
+        [0.393, 0.769, 0.189],
+        [0.349, 0.686, 0.168],
+        [0.272, 0.534, 0.131]
+    ])
+    sepia_img = input_img.dot(sepia_filter.T)
+    sepia_img /= sepia_img.max()
+    return sepia_img
 
-demo = gr.Interface(fn=greet, inputs="image", outputs=["image","image"])
-demo.launch()   
+demo = gr.Interface(sepia, gr.Image(), "image")
+demo.launch()